<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Title</title>
    <script src="./lib/vue.js"></script>
</head>
<style>
    .v-enter,
    .v-leave-to{
        opacity: 0;
        transform: translateX(150px);
    }
    .v-enter-active,
    .v-leave-avtive{
        transition: all 0.8s ease;
    }
</style>
<body>
<!--Vue实例所控制的这个元素区域，就是我们的V-->
<div id="app">
    <input type="button" value="toggle" @click="flag=!flag">
<!--    transition是vue官方提供的-->
    <transition>
        <h3 v-if="flag">这是一个H3</h3>
    </transition>
</div>
<script>
    // 创建Vue实例，得到ViewModel
    var vm = new Vue({
        el: '#app',
        data: {
            flag: false
        },
        methods: {},
    })
</script>
</body>
</html>